World Clock
See current time in major cities worldwide
How to use World Clock
See the current time in major cities around the world at a glance. Multiple time zones. Free online world clock tool.
Who uses a world clock?
A world clock displays the current time in multiple locations simultaneously — essential for anyone whose work or personal life spans multiple time zones.
- Remote teams: A team with members in San Francisco, Amsterdam, and Bangalore needs to know at a glance who is in working hours, who is ending their day, and who is asleep — before sending a message or scheduling a call.
- International trading and finance: Stock market open and close times vary by exchange. A trader watching NYSE (New York), LSE (London), and TSE (Tokyo) needs to know the current time in all three locations simultaneously.
- Travel planning: Check local times at stopovers and destinations when planning multi-leg international travel.
- Customer support: Global support teams need to know when colleagues in other regions are available for escalation.
- Personal connections: Families and friends spread across countries use world clocks to find appropriate times to call — avoiding waking someone at 3am.
Day/night indicator: A world clock showing whether it is day or night at each location helps immediately identify appropriate contact times — no mental calculation of "is 23:00 appropriate to message?"
Frequently Asked Questions
What are the major financial center time zones?
The four major financial hubs: New York (EST/EDT, UTC-5/-4), London (GMT/BST, UTC+0/+1), Tokyo (JST, UTC+9), Sydney (AEST/AEDT, UTC+10/+11). A 24-hour trading day roughly follows these centers — Tokyo closes as London opens, London closes as New York opens. When New York closes, the next major open is Tokyo again.
Which city is always in the same time zone?
Very few cities never change clocks. Notable examples: Japan (JST, UTC+9), China (CST, UTC+8), India (IST, UTC+5:30), and most of Africa do not observe DST. These are the most stable reference points for world clocks — their UTC offset never changes.
What is the largest time zone difference between two inhabited places?
UTC-12 (Baker Island, uninhabited but used as reference) and UTC+14 (Kiribati's Line Islands) have a 26-hour difference. Among major populated areas, the range from UTC-12 to UTC+13 (Tonga, Samoa) spans 25 hours. Two neighboring countries can differ by as much as 2 hours (India/Nepal: 15 minutes; China/Afghanistan: 3.5 hours).
Why does China use only one time zone for such a large country?
China spans approximately 5 geographic time zones but uses a single official time (China Standard Time, CST, UTC+8) for national unity and administrative simplicity. This means sunrise in western Xinjiang can occur at 9-10am local time. The trade-off of extreme social convention for political coherence was a deliberate government decision.
What is the best tool for scheduling across many time zones?
For scheduling specifically, tools like World Time Buddy, Every Time Zone, or Calendly handle multi-timezone scheduling interactively. This world clock is better for awareness of current times — seeing at a glance who is available right now without navigating a scheduling flow.
World clock vs time zone converter vs scheduling tool
A world clock shows current times in multiple cities at once — answers "what time is it now in X?" A time zone converter converts a specific time — answers "if it is 3pm here, what time is it there?" A scheduling tool (Calendly, Doodle, World Time Buddy) finds mutually available slots across time zones — answers "when can we all meet?" Use the world clock for awareness, the converter for specific conversions, and a scheduling tool for finding meeting times.